# # 赋值运算符
# a=8
# a+=2 #相当于a=a+2
# print(a)
# a-=2
# print(a)
# a*=2
#
#
#
#
# #比较运算符
# a=2
# b=11
# print(a==b)
# print(a!=b)
# print(a>b)
# print(a<=b)




# #逻辑运算符
# print(True  and False)
# print(True  and True)






#成员运算符
str1='hello'
print('h'   in  str1)
print('a'   in  str1)
print('c'   not in  str1)
print('o'   not in  str1)
